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Note 2 - Reportable Segments - Property, Plant, Equipment and Water Programs (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Property, plant, and equipment, net	$ 87,045	$ 87,217
Water and Land Resources [Member]
Property, plant, and equipment	96,500	96,380
Less accumulated depreciation	(9,520)	(9,238)
Property, plant, and equipment, net	86,980	87,142
Water Treatment [Member]
Property, plant, and equipment	214	214
Less accumulated depreciation	(149)	(139)
Property, plant, and equipment, net	65	75
Land and Land Improvements [Member] | Water and Land Resources [Member]
Property, plant, and equipment	32,357	32,357
Land and Land Improvements [Member] | Water Treatment [Member]
Property, plant, and equipment	0	0
Water Programs [Member] | Water and Land Resources [Member]
Property, plant, and equipment	29,242	29,209
Water Programs [Member] | Water Treatment [Member]
Property, plant, and equipment	0	0
Pipelines [Member] | Water and Land Resources [Member]
Property, plant, and equipment	22,097	22,096
Pipelines [Member] | Water Treatment [Member]
Property, plant, and equipment	0	0
Building [Member] | Water and Land Resources [Member]
Property, plant, and equipment	1,730	1,730
Building [Member] | Water Treatment [Member]
Property, plant, and equipment	0	0
Leasehold Improvements, Furniture, Fixtures [Member] | Water and Land Resources [Member]
Property, plant, and equipment	1,606	1,605
Leasehold Improvements, Furniture, Fixtures [Member] | Water Treatment [Member]
Property, plant, and equipment	4	4
Machinery and Equipment [Member] | Water and Land Resources [Member]
Property, plant, and equipment	3,737	3,719
Machinery and Equipment [Member] | Water Treatment [Member]
Property, plant, and equipment	210	210
Construction in Progress [Member] | Water and Land Resources [Member]
Property, plant, and equipment	5,731	5,664
Construction in Progress [Member] | Water Treatment [Member]
Property, plant, and equipment	$ 0	$ 0

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 210
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-Section S99
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X

- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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+ References

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